January 28, 2012 (El Cajon)--Visit the first commercial building in El Cajon, built in 1876 as a hotel for travelers and teamsters on their way to the Julian gold fields. The Knox House Museum will be open each Saturday in February, 11 a.m. to 2 p.m. at 280 N. Magnolia Ave., El Cajon. Also view a continuing exhibit titled Children's Toys on the Frontier.